Shikaku,
carve the grid into rectangles.
Split the whole grid into rectangles so each holds one number — and that number is exactly how many cells the rectangle covers.
- Time
- 0:00
- Boxes
- 0/0
- Hints
- 0
Drag to draw a rectangle · Tap one to remove it · Area equals its number
How Shikaku works,
in short.
- Step 01448
Each number is a rectangle's size.
Every number must end up inside exactly one rectangle, and that rectangle's area — its width times its height — has to equal the number. A 4 wants a rectangle of four cells; an 8 wants eight.
- Step 02448
Drag to draw a rectangle; tap to undo.
Press and drag from one cell to another to box off a rectangle. Drawing over existing ones replaces them, and tapping a single rectangle removes it. A rectangle turns green the moment it holds one number equal to its area.
- Step 03448
Fill the grid, no overlaps.
Keep drawing until every cell belongs to exactly one rectangle and each rectangle holds a single number. No gaps, no overlaps — when the whole board is carved up correctly, you've solved it.